KR101461431B1 - Fluid delivery device and tire vulcanizing device - Google Patents

Abstract

A fluid supply device capable of removing foreign matters on a surface of a rotor is provided. The fluid supply device 1 is provided with the rotor accommodating chamber 15 in which the rotor accommodating chamber 14 for accommodating the rotor 10 of the canned electric motor is installed and the fluid accommodating chamber 15 provided in the closed state in the rotor accommodating chamber 14, And a pump casing 4 in which an impeller 5 is accommodated in the fluid supply chamber 6. Further, the vicinity of the side of the fluid supply chamber 6 and the upper end of the rotor accommodation chamber 14 are connected by a tube 16 in a hollow state.

Description

Technical Field [0001] The present invention relates to a fluid supply device and a tire vulcanizing device,

The present invention relates to a fluid supply apparatus and a tire vulcanizing apparatus. More specifically, the present invention relates to a fluid supply apparatus using a canned motor partitioned by a partition (can) between a rotor and a stator coil, and a tire vulcanization apparatus using such a fluid supply apparatus.

BACKGROUND ART It is known that a so-called canned electric motor is used as a driving motor as a fluid supply device for a heating device that uses hot water, high-temperature steam, hot gas or the like as a heating medium (fluid) as represented by a tire vulcanizer For example, see Patent Document 1).

Such a fluid supply device includes an electric motor in which a rotor and a stator coil are partitioned by a partition wall (can) in an airtight state. By rotating the impeller with the electric motor, the fluid can be sucked from the suction port and the sucked fluid can be discharged from the discharge port have.

Here, since the stator coil is partitioned from the heating medium (fluid) by the partition wall, the stator coil is isolated from the heating medium (fluid), and troubles due to the influence of the steam can be avoided.

Patent Document 1: JP-A-2006-22644

However, in the conventional fluid supply apparatus, since the rotor is exposed to high temperature or high humidity environment, the outer circumferential surface of the rotor is corroded, and the rust generated by the corrosion becomes a foreign matter and can be attached to the outer circumferential surface of the rotor. As a result, the life of the rotor is shortened, and the adhered foreign matter accumulates in the gap with the partition wall, thereby adversely affecting the rotation of the rotor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fluid supply device capable of removing foreign matter on the surface of a rotor and a tire vulcanizing apparatus using such a fluid supply device.

In order to attain the above object, a fluid supply device of the present invention comprises a rotor, a motor including a stator coil disposed around the rotor, and a motor for accommodating the rotor and partitioning the rotor and the stator coil into a closed state 1, a drive shaft having one end connected to the rotor, an impeller connected to the other end of the drive shaft, and a second region provided in a hermetically connected state with the first region, An inlet for receiving the fluid into the second region by rotation of the impeller while being installed in the impeller receiver, and a suction port for receiving the fluid by the rotation of the impeller, A discharge port for discharging the fluid from the second region and a discharge port for discharging the fluid from the rotor to the first And the other end of the second region is connected to a region of the second region that is higher than an area where the impeller is connected to the first region by rotation of the impeller, .

Here, the other end of the tube is connected to a region of the second region which is higher in pressure than an area connected to the first region by rotation of the impeller, so that the other end of the tube The fluid is moved, and the fluid is supplied from the rotor to the first region opposite to the impeller. Then, the fluid supplied from the rotor to the first region opposite to the impeller returns to the second region between the rotor and the stator coil. That is, when a tube is installed, the fluid passes between the rotor and the stator coil when the impeller rotates.

The " region of the second region that becomes higher than the region connected to the first region by the rotation of the impeller " may be, for example, " a connection between the first region and the second region A region located on the downstream side of the fluid flow generated by the rotation of the impeller relative to the region where the impeller is installed ".

In order to achieve the above object, a fluid supply device of the present invention includes a rotor, a motor including a stator coil disposed around the rotor, and a rotor accommodating the rotor, wherein the rotor and the stator coil are partitioned And a second region provided in a hermetically connected state with the first region, wherein the second region is connected to the first region and the second region, An inlet for receiving the fluid into the second region by rotation of the impeller while being installed in the impeller receiver; and an inlet for receiving the fluid from the second region by rotation of the impeller, A discharge port for discharging the fluid from the second area by the second area, And a fluid supply means for supplying fluid in the stator coil between the rotor and the stator coil.

Here, the fluid passes between the rotor and the stator coil at the time of rotation of the impeller by the fluid supply means for supplying the fluid in the second region between the rotor and the stator coil in association with the rotation of the impeller.

In order to achieve the above object, the tire vulcanizing apparatus of the present invention comprises a mold, a bladder disposed inside the mold and configured to be able to shrink by supply and discharge of fluid, A fluid pipe connected to the bladder for discharging fluid from the bladder; a communication pipe connecting the fluid pipe to the fluid discharge pipe; and a fluid pipe connected to the fluid pipe and the fluid pipe, And a fluid supply device provided in a circulation circuit formed by the communicating pipe, wherein the fluid supply device includes a rotor, a motor including a stator coil installed around the rotor, and a rotor accommodating the rotor, And a first region for partitioning between the stator coils in a hermetically sealed state; An impeller receiver including a connected drive shaft, an impeller connected to the other end of the drive shaft, and a second region that is hermetically connected to the first region, wherein the impeller is accommodated in the second region, A discharge port for discharging fluid from the second region by rotation of the impeller while being installed in the impeller receiver, and a discharge port for discharging the fluid from the second region by rotation of the impeller, The impeller is connected to a first region opposite to the impeller from the rotor and the other end is connected to a region of the second region which is higher than an area of the second region connected to the first region by rotation of the impeller, And a tube formed in a hollow state.

Here, the other end of the tube is connected to a region of the second region which is higher in pressure than an area connected to the first region by rotation of the impeller, so that the other end of the tube The fluid is moved, and the fluid is supplied from the rotor to the first region opposite to the impeller. Then, the fluid supplied from the rotor to the first region opposite to the impeller returns to the second region between the rotor and the stator coil. That is, when a tube is installed, the fluid passes between the rotor and the stator coil when the impeller rotates.

In order to achieve the above object, the tire vulcanizing apparatus of the present invention comprises a mold, a bladder disposed inside the mold and configured to be able to shrink by supply and discharge of fluid, A fluid pipe connected to the bladder for discharging fluid from the bladder; a communication pipe for connecting the fluid pipe to the fluid discharge pipe; a fluid pipe connected to the fluid pipe and the fluid discharge pipe; And a fluid supply device provided in a circulation circuit formed by the fluid communication pipe, wherein the fluid supply device includes a rotor, a motor including a stator coil disposed around the rotor, And a first region for partitioning between the stator coil and the stator coil in a hermetically sealed state, An impeller coupled to the first region and a second region connected in a hermetically sealed state to the impeller and having the impeller accommodated in the second region; A suction port installed in the impeller receiver for sucking fluid into the second region by rotation of the impeller; a discharge port provided in the impeller receiver for discharging fluid from the second region by rotation of the impeller; And fluid supplying means for supplying fluid in the second region between the rotor and the stator coil in association with the rotation of the impeller.

Here, the fluid passes between the rotor and the stator coil at the time of rotation of the impeller by the fluid supply means for supplying the fluid in the second region between the rotor and the stator coil in association with the rotation of the impeller.

According to another aspect of the present invention, there is provided a tire vulcanizing apparatus including a mold, a bladder disposed inside the mold and configured to be able to shrink by supplying and discharging a fluid, A fluid pipe connected to the bladder for discharging fluid from the bladder; a communication pipe for connecting the fluid pipe to the fluid discharge pipe; a fluid pipe connected to the fluid pipe and the fluid discharge pipe; And a fluid supply device provided in a circulation circuit formed by the communicating pipe, wherein the fluid supply device includes a rotor, a motor including a stator coil installed around the rotor, and a rotor accommodating the rotor, And a first region for partitioning between the stator coils in a hermetically sealed state; An impeller receiver including a connected drive shaft, an impeller connected to the other end of the drive shaft, and a second region that is hermetically connected to the first region, wherein the impeller is accommodated in the second region, A discharge port for discharging fluid from the second region by rotation of the impeller while being installed in the impeller receiver, and a discharge port for discharging the fluid from the second region by rotation of the impeller, And a tube connected to the first region on the opposite side of the impeller from the rotor and having the other end connected to at least one of the fluid supply pipe and the fluid discharge pipe so that the interior thereof is formed in a hollow state.

Here, when the other end of the tube is connected to the fluid supply pipe, when the fluid is supplied from the fluid supply pipe to the bladder, the fluid moves from one end to the other end of the tube, The fluid is supplied to the first region. Then, the fluid supplied from the rotor to the first region opposite to the impeller reaches the second region through the space between the rotor and the stator coil. That is, a tube connected to the fluid supply pipe is provided at the other end, so that the fluid passes between the rotor and the stator coil at the time of supplying the fluid to the bladder.

On the other hand, when the other end of the tube is connected to the fluid discharge pipe, when the fluid is discharged from the bladder to the fluid discharge pipe, the fluid moves from one end of the tube toward the other end, The fluid is discharged from the first region. When the fluid is discharged from the first region on the side opposite to the impeller from the rotor, the fluid in the second region is supplied to the first region through the space between the rotor and the stator coil, and the fluid supplied to the first region flows through the tube And then discharged through a pipe. That is, a tube connected to the fluid discharge pipe at the other end is provided, so that the fluid passes between the rotor and the stator coil when the fluid is discharged from the bladder.

Further, when the other end of the tube is connected to both the fluid supply pipe and the fluid discharge pipe, the fluid passes between the rotor and the stator coil at the time of supplying the fluid to the bladder, The fluid passes between the coils.

In the fluid supply device and the tire vulcanizing apparatus of the present invention, since the fluid passes between the rotor and the stator coil, foreign matter on the surface of the rotor can be removed.

1 is a schematic cross-sectional view for explaining an example of a fluid supply apparatus to which the present invention is applied.
2 is a schematic view for explaining a fluid flow of an example of a fluid supply apparatus to which the present invention is applied.
3 is a schematic view for explaining an example of a tire vulcanizing apparatus to which the present invention is applied.
4 is a schematic cross-sectional view for explaining a fluid supply device employed in another example of a tire vulcanizing apparatus to which the present invention is applied.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the invention (hereinafter referred to as " embodiments ") will be described. The description will be made in the following order.

1. First embodiment (fluid supply device 1)

2. Second Embodiment (Tire vulcanizer (1))

3. Third embodiment (tire vulcanizer (2))

4. Fourth embodiment (tire vulcanizing device (3))

5. Others

<1. First Embodiment>

FIG. 1 is a schematic cross-sectional view for explaining an example of a fluid supply device to which the present invention is applied. The fluid supply device 1 shown here is configured by applying a drive structure by a canned electric motor, (3).

The pump section 2 includes a pump casing 4 and an impeller 5. The pump casing 4 has a suction port 7 formed at a central portion (bottom portion) and a discharge port 8 formed at an outer peripheral surface (side surface) while a fluid supply chamber 6 is formed therein.

The suction port 7 and the discharge port 8 are connected to the fluid supply chamber 6. The impeller 5 is disposed inside the fluid supply chamber 6 and sucks the fluid from the suction port 7 by rotating the impeller 5 and discharges the sucked fluid from the discharge port 8.

The pump casing 4 is an example of an impeller receiver, and the fluid supply chamber 6 is an example of a second region.

The impeller 5 is mounted on the lower end of the pump drive shaft 9 and the rotor 10 of the motor portion 3 is mounted on the upper end of the pump drive shaft 9. [ The pump drive shaft 9 is supported by a bearing 11 formed of silicon nitride, stainless steel or the like.

The rotor 10 is a pair with the stator coil 12 disposed around the rotor 10 and the rotor 10 and the stator coil 12 are partitioned by the partition 13 .

Specifically, the rotor 10 is provided in the rotor accommodating chamber 14 with a rotor accommodating chamber 15 in which a rotor accommodating chamber 14 for accommodating the rotor 10 is formed. And the stator coil 12 is partitioned from the rotor receiver 15 into a closed state.

The rotor accommodating chamber 14 is an example of the first region, and the side wall of the rotor accommodating body 15 functions as a partition wall (can) 13.

The rotor accommodating chamber 14 and the fluid supply chamber 6 are connected to each other by a gap in the bearing 11 or a gap around the pump drive shaft 9 supported by the bearing 11, (14) and the fluid supply chamber (6).

Here, the rotor 10 is formed of a silicon steel plate, an iron plate, a composite material of a silicon steel plate and an aluminum plate, or the like. In addition, stainless steel spray coating is applied to the surface of the rotor 10 for the purpose of preventing rust and adhesion of foreign matter.

The rotor receiver 15 (can 13) may be made of a non-magnetic material (such as titanium, stainless steel, plastic, aluminum, ceramics, ).

The fluid supply device 1 to which the present invention is applied is provided with a hollow tube 16 for connecting the rotor accommodation chamber 14 and the fluid supply chamber 6. Specifically, one end of the tube 16 is connected to the upper end of the rotor accommodating chamber 14. The other end of the tube 16 is connected to the opposite side of the outer circumferential surface (side surface) where the discharge port 8 of the pump casing 4 is formed.

The upper end of the rotor accommodating chamber 14 is an example of the &quot; first region opposite to the impeller from the rotor &quot;, and the &quot; Is an example of &quot; a region of the second region that becomes higher in pressure than an area connected to the first region due to rotation of the impeller &quot;.

In the fluid supply device 1 according to the first embodiment configured as described above, when the canned electric motor is driven, the pump drive shaft 9 mounted on the rotor 10 is rotated, and the impeller 5 Rotate. Then, as the impeller 5 rotates, the fluid is sucked from the suction port 7, and the sucked fluid is discharged from the discharge port 8.

Here, as the impeller 5 rotates, the fluid moves to the outer circumferential surface (side surface) side of the pump casing 4, and as a result, the pressure in the vicinity of the outer circumferential surface increases. Specifically, the pressure in the vicinity of the outer circumferential surface is higher than the central portion of the pump casing 4.

That is, the outer peripheral surface (the side surface) of the tubular body 16 is connected to the outer circumferential surface of the tubular body 16 rather than the peripheral clearance of the pump drive shaft 9, which is an area in which the impeller 5 is connected to the rotor accommodating chamber 14 and the fluid supply chamber 6, ) Is increased.

2, the fluid in the fluid supply chamber 6 is supplied to the rotor accommodation chamber 14 through the tube 16 (see symbol A in FIG. 2) due to the pressure difference, The fluid supplied to the rotor accommodation chamber 14 is returned into the fluid supply chamber 6 through the gap between the rotor 10 and the partition wall 13 (refer to reference character B in FIG. 2). By supplying the fluid to the gap between the rotor 10 and the partition wall 13, foreign matter adhering to the surface of the rotor 10 can be removed.

In the fluid supply device 1 according to the first embodiment, fluid is always supplied to the clearance between the rotor 10 and the partition wall 13 at the time of operating the fluid supply device 1, 10 can be sufficiently removed. In other words, as compared with the case where the fluid is supplied to the gap between the rotor 10 and the partition wall 13 at a predetermined timing, the fluid is always supplied to the gap between the rotor 10 and the partition wall 13, It becomes possible to sufficiently clean the surface of the rotor 10.

In the fluid supply device 1 according to the first embodiment, the connecting position of the other end of the tube 16 is set to the opposite side of the outer peripheral surface (side surface) where the discharge port 8 is formed, 9 and the outer circumferential surface to which the tubular body 16 is connected becomes larger and it becomes possible to efficiently supply the fluid to the rotor accommodation chamber 14 through the tubular body 16.

That is, when the connecting position of the other end of the tubular body 16 is close to the discharge port 8, the vicinity of the other end of the tubular body 16 is high due to discharge of the fluid from the discharge port 8 It is difficult to obtain a pressure. On the contrary, in the case of the configuration of the present embodiment, a high pressure can be obtained in the vicinity of the other end of the tube (tube) 16 and the fluid can be efficiently circulated through the tube (tube) So that it can be supplied to the storage chamber 14.

Further, in the fluid supply device 1 according to the first embodiment, the surface of the rotor 10 can be cleaned only by providing a tube (tube) 16, and since the structure is very simple, It is high and easy to apply to existing facilities.

In the fluid supply device 1 according to the first embodiment, since the fluid supplied from the tube 16 passes through the bearing 11, it is possible to remove foreign matter adhering to the bearing 11 have.

In the present embodiment, the other end of the tube 16 is connected to the vicinity of the outer circumferential surface (side surface) of the pump casing 4 as an example. However, as the impeller 5 is rotated It is sufficient that the fluid can be supplied to the rotor accommodation chamber 14 through the tubular body 16 due to the pressure difference and the connection position of the other end of the tubular body 16 is always the same The present invention is not limited to this configuration.

In this embodiment mode, the case where the fluid passes through the bearing 11 is described as an example. However, the fluid does not necessarily have to pass through the bearing 11 and, for example, 13) may be separately formed in the fluid supply chamber (6).

<2. Second Embodiment>

FIG. 3 is a schematic view for explaining an example of a tire vulcanizing apparatus to which the present invention is applied. The tire vulcanizing apparatus 20 shown here includes upper and lower molds 21, a bladder 21 which is expanded by supplying a heating fluid, (22). &Lt; / RTI &gt; The tire vulcanizing apparatus 20 here stores the green tire 23 by pressing the bladder 22 expanded by supplying the heating fluid (high-temperature steam) to the inner surface of the green tire 23 set in the metal mold 21 To form a vulcanization.

The bladder 22 is connected to a fluid supply pipe 25 provided with an on-off valve 24 and a fluid discharge pipe 27 provided with an on-off valve 26, The fluid supply pipe 25 and the fluid discharge pipe 27 are connected to the communicating pipe 28 at the position on the side of the fluid supply pipe 22.

A circulation closed circuit is formed in the bladder 22, the fluid supply pipe 25, the fluid discharge pipe 27 and the communicating pipe 28, and a fluid supply device 29 is provided on the closed circulation loop The fluid supply device 29 is provided on the communicating tube 28). The fluid supply device 29 employs the fluid supply device 1 of the first embodiment described above.

Although the fluid supply device 29 is provided on the circulation loop 28 as an example, the fluid supply device 29 may be provided on the closed circulation circuit, Or the fluid supply device 29 may be provided in the middle of the fluid discharge pipe 27. An open / close valve 30 is also provided in the communicating tube 28.

In the tire vulcanizing apparatus 20 according to the second embodiment configured as described above, the open / close valves 24 and 26 are opened while the green tire 23 is set in the mold 21, The heating fluid flows into the bladder 22 and the opening and closing valves 24 and 26 are closed with the heating fluid filling the inside of the bladder 22 .

The inside of the bladder 22 is filled with the heating fluid, and then the opening / closing valve 30 of the communicating pipe 28 is opened to open the circulating closed circuit. In this state, the fluid supply device 29 is operated to circulate the heating fluid in the circulating closed circuit, and maintains the inside of the bladder 22 at a uniform temperature as the heating fluid circulates.

When the vulcanization of the green tire 23 is completed, the open / close valves 24 and 26 are opened and the open / close valve 30 is closed to stop the fluid supply device 29, And discharges the cold heating fluid from the fluid discharge pipe (27).

In the tire vulcanizing apparatus to which the present invention is applied, since the fluid supply device 1 according to the first embodiment is adopted as the fluid supply device 29, it is possible to remove foreign matter adhering to the surface of the rotor 10 .

Further, in the tire vulcanizing apparatus to which the present invention is applied, it is possible to omit the blowing process (purge process) which has been done conventionally, and the tire can be vulcanized with a high yield. Hereinafter, this point will be described in detail.

First, in a conventional method of vulcanizing a tire using a tire vulcanizer, in the previous step of circulating the fluid in the closed loop, the bladder is blasted for the purpose of discharging drain, which is a heating fluid (high temperature steam, etc.) A blowing process (purge process) for forcibly blowing steam, nitrogen gas, inert gas, or the like was performed. This is to avoid adhesion of foreign matters on the surface of the rotor when circulating the fluid in the circulating closed circuit while the drain is left in the bladder because the drain contains deteriorated components of the bladder and the like.

On the other hand, in the tire vulcanizing apparatus to which the present invention is applied, it is possible to remove foreign matter adhering to the surface of the rotor 10, and adhesion of foreign matter to the surface of the rotor is not a problem. Therefore, The device 29 can be operated. By omitting the blowing process (purge process), the heat loss inside the bladder 22 can be eliminated, and the tire can be vulcanized with high efficiency. Particularly, the drain of the liquid is a heat source having a stable temperature, and the curing time can also be shortened. In addition, since the blowing process (purge process) can be omitted, consumption of steam, nitrogen gas, inert gas, and the like can be suppressed and cost reduction can be realized.

<3. Third Embodiment>

Another example of the tire vulcanizing apparatus to which the present invention is applied is that the fluid supply apparatus 31 of the configuration shown in Fig. 4 is employed as the fluid supply apparatus 29, and the tire vulcanization apparatus of the second embodiment Device.

The fluid supply device 31 shown here is different from the fluid supply device 1 of the first embodiment in that the other end of the tubular body 16 is connected to the fluid supply pipe 25, Is the same as the fluid supply device 1 of the first embodiment described above.

In the tire vulcanizing apparatus according to the third embodiment configured as described above, the open / close valves 24, 26 and 30 are opened while the green tire 23 is set in the mold 21, When the heating fluid is supplied from the supply pipe 25, the heating fluid flows into the bladder 22 and the opening / closing valves 24 and 26 are closed with the heating fluid filling the inside of the bladder 22 do.

When the heating fluid is supplied from the fluid supply pipe 25, the heating fluid is supplied to the rotor accommodation chamber 14 through the pipe body 16, And reaches the fluid supply chamber 6 through the gap between the partition wall 10 and the partition wall 13.

After the inside of the bladder 22 is filled with the heating fluid, the fluid supply device 31 is operated to circulate the heating fluid in the closed circulating loop, and the inside of the bladder 22 is uniformly circulated Keep at a temperature.

When the vulcanization of the green tire 23 is finished, the open / close valves 24 and 26 are opened and the open / close valve 30 is closed to stop the fluid supply device 31, And discharges the cold heating fluid from the fluid discharge pipe (27).

The heating fluid is supplied to the gap between the rotor 10 and the partition wall 13 when the heating fluid is supplied from the fluid supply pipe 25 into the bladder 22 in the tire vulcanizing apparatus to which the present invention is applied, It is possible to remove the foreign matter adhered to the surface.

Further, in the tire vulcanizing apparatus to which the present invention is applied, it is possible to omit the blowing step (purge step) which has been performed in the prior art like the above-described second embodiment, and the tire can be vulcanized at a high yield.

<4. Fourth Embodiment >

Another example of the tire vulcanizing apparatus to which the present invention is applied is different from the third embodiment in that the other end of the tube 16 is connected to the fluid discharge pipe 27. However, 3 (see Fig. 4).

In the tire vulcanizing apparatus according to the fourth embodiment, the open / close valves 24 and 26 are opened while the green tire 23 is set inside the metal mold 21, and the heating fluid The heating fluid flows into the bladder 22 and the open / close valves 24 and 26 are closed with the heating fluid filling the inside of the bladder 22.

The inside of the bladder 22 is filled with the heating fluid, and then the opening / closing valve 30 of the communicating pipe 28 is opened to open the circulating closed circuit. In this state, the fluid supply device 31 is operated to circulate the heating fluid in the closed loop, and maintains the inside of the bladder 22 at a uniform temperature as the heating fluid circulates.

When the vulcanization of the green tire 23 is completed, the open / close valves 24 and 26 are opened, the fluid supply device 31 is stopped, and the heating fluid, which is filled in the bladder 22, .

When the heating fluid is discharged from the fluid discharge pipe 27, the heating fluid is discharged from the rotor accommodation chamber 14 through the tube 16 and the fluid in the fluid supply chamber 6 flows into the rotor 10 The fluid that reaches the rotor accommodation chamber 14 through the gap with the partition 13 and reaches the rotor accommodation chamber 14 is discharged through the tubular body 16.

The heating fluid is supplied to the gap between the rotor 10 and the partition wall 13 when the heating fluid is discharged from the bladder 22 to the fluid discharge pipe 27 in the tire vulcanizing apparatus to which the present invention is applied, It is possible to remove the foreign matter adhered to the surface.

Further, in the tire vulcanizing apparatus to which the present invention is applied, it is possible to omit the blowing step (purge step) which has been conventionally performed as in the case of the second and third embodiments described above, can do.

<5. Others>

Although the canned electric motor is used in the present embodiment, the electric efficiency of the canned electric motor is generally poor, and the load becomes excessive depending on conditions. In order to prevent the motor from exceeding the heat-resistant temperature due to such an excessive load, it is necessary to always supply air or the like and cool it. Therefore, it is preferable to provide a thermocouple in the inside of the canned electric motor and control the amount of cooling air to be supplied while monitoring the internal temperature.

Further, even if the rotation command to the electric motor is the same, the rotation state of the impeller differs depending on the load caused by the fluid. Therefore, it is possible to avoid excessive operation of the electric motor by controlling the electric motor while confirming the actual rotation state after a sensor (for example, a non-contact sensor) capable of confirming the actual rotation state of the impeller is installed, Thereby realizing the operation.

1 fluid supply device 2 pump section
3 Motor part 4 Pump casing
5 Impeller 6 Fluid supply chamber
7 Inlet 8 Outlet
9 Pump drive shaft 10 Rotor
11 Bearing 12 Stator coil
13 Bulkhead (can) 14 Rotor room
15 Rotor receiver 16 Tubular body
20 Tire vulcanizer 21 Mold
22 bladder 23 green tire
24 Opening valve 25 Fluid supply line
26 opening / closing valve 27 fluid discharge pipe
28 Communicating tube 29 Fluid supply
30 Opening valve 31 Fluid supply

Claims (11)

A motor including a rotor and a stator coil disposed around the rotor;
A rotor including a rotor and a first region for enclosing the rotor and the stator coil in a hermetically sealed state;
A drive shaft whose one end is connected to the rotor;
An impeller connected to the other end of the drive shaft;
An impeller receiver including a second region provided in a hermetically connected state with the first region, the impeller being accommodated in the second region;
A suction port installed in the impeller receiver for sucking fluid into the second region by rotation of the impeller;
A discharge port installed in the impeller and discharging fluid from the second region by rotation of the impeller; And
The impeller is connected to a first region on the opposite side of the impeller from the rotor and the other end is connected to a region of the second region that is higher than the region where the impeller is connected to the first region by rotation of the impeller And includes a tubular body formed in a hollow state while being connected,
And the fluid is supplied to the first region by rotating the impeller with the tubular body therebetween, thereby removing deposits on the surface of the rotor. The method according to claim 1,
And supplies the fluid from the position corresponding to the center of the rotor to the first region while discharging the fluid from the region located on the side facing the side provided with the discharge port to the tube. 3. The method according to claim 1 or 2,
And the connection angle of the other end of the tube is a predetermined angle with respect to a direction of a flow in which the fluid is discharged from the discharge port. The method of claim 3,
Wherein the predetermined angle is 90 DEG. A motor including a rotor and a stator coil disposed around the rotor;
A rotor including a rotor and a first region for enclosing the rotor and the stator coil in a hermetically sealed state;
A drive shaft whose one end is connected to the rotor;
An impeller connected to the other end of the drive shaft;
An impeller receiver including a second region provided in a hermetically connected state with the first region, the impeller being accommodated in the second region;
A suction port installed in the impeller receiver for sucking fluid into the second region by rotation of the impeller;
A discharge port installed in the impeller and discharging fluid from the second region by rotation of the impeller; And
Wherein the rotor is connected to a position corresponding to the first region corresponding to a direction opposite to a direction in which the impeller is disposed with respect to the rotor and a position corresponding to the first region to which the one end is connected, And the other end of the tube is connected to a side of the side opposite to the side on which the discharge port is provided, and the inside of the tubular body is formed in a hollow state. 6. The method of claim 5,
And the connection angle of the other end of the tube is a predetermined angle with respect to a direction of a flow in which the fluid is discharged from the discharge port. The method according to claim 6,
Wherein the predetermined angle is 90 DEG. A motor including a rotor and a stator coil disposed around the rotor;
A rotor including a rotor and a first region for enclosing the rotor and the stator coil in a hermetically sealed state;
A drive shaft whose one end is connected to the rotor;
An impeller connected to the other end of the drive shaft;
An impeller receiver including a second region provided in a hermetically connected state with the first region, the impeller being accommodated in the second region;
A suction port installed in the impeller receiver for sucking fluid into the second region by rotation of the impeller;
A discharge port installed in the impeller and discharging fluid from the second region by rotation of the impeller; And
Wherein the rotor is connected to a position corresponding to the first region corresponding to a direction opposite to a direction in which the impeller is positioned with respect to the rotor, and a position corresponding to the first region to which the one end is connected, And the other end of the impeller is connected to a non-forming region of the discharge port of the impeller, and the inside of the impeller is hollow. mold;
A bladder disposed inside the mold and configured to be able to shrink by supply and discharge of fluid;
A fluid supply pipe connected to the bladder and supplying fluid to the bladder;
A fluid outlet connected to the bladder for discharging fluid from the bladder;
A communication pipe connecting the fluid supply pipe and the fluid discharge pipe; And
And a fluid supply device provided in a circulation circuit formed by the fluid supply pipe, the fluid discharge pipe, and the communicating pipe,
The fluid supply device includes:
A motor including a rotor and a stator coil disposed around the rotor;
A rotor including a rotor and a first region for enclosing the rotor and the stator coil in a hermetically sealed state;
A drive shaft whose one end is connected to the rotor;
An impeller connected to the other end of the drive shaft;
An impeller receiver including a second region provided in a hermetically connected state with the first region, the impeller being accommodated in the second region;
A suction port installed in the impeller receiver for sucking fluid into the second region by rotation of the impeller;
A discharge port installed in the impeller and discharging fluid from the second region by rotation of the impeller; And
The impeller is connected to a first region on the opposite side of the impeller from the rotor and the other end is connected to a region of the second region that is higher than the region where the impeller is connected to the first region by rotation of the impeller And includes a tube which is connected in a hollow state inside thereof,
Wherein the impeller is rotated to supply a fluid to the first region with the tube interposed therebetween to remove the deposit on the surface of the rotor. mold;
A bladder disposed inside the mold and configured to be able to shrink by supply and discharge of fluid;
A fluid supply pipe connected to the bladder and supplying fluid to the bladder;
A fluid outlet connected to the bladder for discharging fluid from the bladder;
A communication pipe connecting the fluid supply pipe and the fluid discharge pipe; And
And a fluid supply device provided in a circulation circuit formed by the fluid supply pipe, the fluid discharge pipe and the communicating pipe,
The fluid supply device includes:
A motor including a rotor and a stator coil disposed around the rotor;
A rotor receiver including a rotor and a first region enclosing the rotor and the interstitial coil in a hermetically sealed state;
A drive shaft whose one end is connected to the rotor;
An impeller connected to the other end of the drive shaft;
An impeller receiver including a second region provided in a hermetically connected state with the first region, the impeller being accommodated in the second region;
A suction port installed in the impeller receiver for sucking fluid into the second region by rotation of the impeller;
A discharge port installed in the impeller and discharging fluid from the second region by rotation of the impeller; And
Wherein the rotor is connected to a position corresponding to the first region corresponding to a direction opposite to a direction in which the impeller is disposed with respect to the rotor and a position corresponding to the first region to which the one end is connected, And the other end of the pipe is connected to a side of the side opposite to the side where the discharge port is installed, and includes a tube whose inside is formed in a hollow state. mold;
A bladder disposed inside the mold and configured to be able to shrink by supply and discharge of fluid;
A fluid supply pipe connected to the bladder and supplying fluid to the bladder;
A fluid outlet connected to the bladder for discharging fluid from the bladder;
A communication pipe connecting the fluid supply pipe and the fluid discharge pipe; And
And a fluid supply device provided in a circulation circuit formed by the fluid supply pipe, the fluid discharge pipe and the communicating pipe,
The fluid supply device includes:
A motor including a rotor and a stator coil disposed around the rotor;
A rotor including a rotor and a first region for enclosing the rotor and the stator coil in a hermetically sealed state;
A drive shaft whose one end is connected to the rotor;
An impeller connected to the other end of the drive shaft;
An impeller receiver including a second region provided in a hermetically connected state with the first region, the impeller being accommodated in the second region;
A suction port installed in the impeller receiver for sucking fluid into the second region by rotation of the impeller;
A discharge port installed in the impeller and discharging fluid from the second region by rotation of the impeller; And
Wherein the rotor is connected to a position corresponding to the first region corresponding to a direction opposite to a direction in which the impeller is disposed with respect to the rotor, and a position corresponding to the first region to which the one end is connected, And the other end of the impeller is connected to a non-forming region of the discharge port of the impeller receiver, and the inside of the impeller receiver is formed in a hollow state.

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